Installation, Operation and Service Manual

REF SeriesUndercounter Refrigerator

Cool Ideas For Ice Management 00104109R09

801 Church Lane • PO Box D, Easton, PA 18044, USAToll free (800) 523-9361 • (888) 2-FOLLETT(610) 252-7301 • Fax (610) 250-0696 • www.follettice.com

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Order parts onlinewww.follettice.com

Before service number B59000

Cool Ideas For Ice Management

2

Follett CorporationEquipment Return Policy

Follett equipment may be returned for credit under the following conditions:1. The equipment is new and unused.2. A return authorization number has been issued by customer service within 30 days after shipment.3. Follett receives the equipment at the factory in Easton, PA within 30 days after issuance of the return authorization number.4. The equipment must be returned in Follett packaging. If the packaging has been damaged or discarded, Follett will forward,

at the customer’s expense, new packaging.

Note: Return freight charges are the responsibility of the customer. If equipment is returned and is damaged because ofimproper packaging, Follett Corporation will not be held responsible.

Credit will be issued when:The equipment has been inspected by Follett and deemed suitable to be returned to stock.

Note: A 15% restocking charge will be deducted from the credit. If the cost to return the product to stock exceeds 15%, theactual cost will be deducted.

Table of contents

Welcome to Follett. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Stabilizer adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Sealing the unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Shelving adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Reversing door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Changing the temperature set point . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7How the refrigerator works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Temperature control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Service information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Latch adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Gasket replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Slide-out compressor tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Refrigeration system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Accessory information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Temperature alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Pyxis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Replacement parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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Welcome to Follett

Follett equipment enjoys a well-deserved reputation for excellent performance, long-term reliability andoutstanding after-the-sale support. To ensure that this product delivers that same degree of service, we ask thatyou take a moment to review this manual before beginning the installation. Should you have any questions orrequire technical help at any point, please call our technical service group at (800) 523-9361, (888) 2-FOLLETTor (610) 252-7301.

Before you beginAfter uncrating and removing all packing material, inspect the equipment for concealed shipping damage. Ifdamage is found, notify the shipper immediately and contact Follett Corporation so that we can help in the filing ofa claim, if necessary.

Specifications

Series specificationsREF4-ADA 31.5" height fits below 34" high ADA-compatible counter 4.0 cu ft capacityREF5 34.5" height fits below standard 36" high counter 4.8 cu ft capacity

Electrical specifications115V, 60Hz, 1 phaseFull load amps: 8.0Minimum circuit ampacity: 15 ampMaximum size of branch circuit overcurrent device: 15 amp

Refrigeration specificationsRefrigerant – R404ACharge size – 8 ozMaximum design pressures:

High side – 375psiLow side – 174psi

Installation specificationsAmbient temperature must not exceed 100°F (38°C). The front louvered panel must be kept free of any cabinet trim or obstructions to ensure proper ventilation of therefrigeration system.

4

Important cautions

Equipment must be wired according to local and NEC codes.

Always disconnect power before servicing refrigerator.

5

Leveling the refrigeratorInternal stabilizing legs are provided to level the refrigerator in its final location. These legs are retracted forshipping. To allow the refrigerator to slide easily during installation the stabilizing legs can be extended to clearthe bottom of the refrigerator panels.

To access the stabilizing legs, remove the lower front panel. Turn the legs clockwise to lower andcounterclockwise to raise.

Shelving adjustmentThe epoxy-coated wire shelves may be adjusted in .5" increments.1. Remove shelf.2. Remove each shelf bracket by applying pressure and lifting bottom tab up and out of pilaster.3. Insert each shelf bracket in new location by inserting top curved tab and applying pressure while inserting

lower tab.4. Reinsert shelf.

Reversing the door swing – optional1. Remove screws and latch from refrigerator cabinet. (Fig. 1.1).

2. Use flat screwdriver to carefully remove (do not scratch) hinge covers (Fig. 2.1).

3. Support door and remove screws attaching hinge to refrigerator cabinet (Fig. 2.2).

4. Cover hinge screw holes with screw hole plugs removed from opposite side.

5. Reverse door and reinstall hinge screws.

6. Reinstall latch on opposite side.

7. Remove screws and handle from door (Fig. 3.1).

8. Rotate handle (Fig. 3.2).

9. Reinstall handle screws (application of 242 blue Loctite® to handle screws recommended).

Installation

1

2

1

1

2

1

2

Fig. 1 Fig. 2 Fig. 3

ADJUST

°F

SET

1 OUTPUT

ADJUST

°F

SET

1 OUTPUT

ADJUST

°F

SET

1 OUTPUT

ADJUST

°F

SET

1 OUTPUT

ADJUST

°F

SET

1 OUTPUT

1

2

4

5

6

3

All set points have a built-in 3˚ differential. The 3˚ differential means that with a 38˚F set point, for example, thecompressor will turn on at 38˚F and run through 37˚, 36˚, and 35˚F (-3˚) before turning off when it reaches 34˚F.Because there is still refrigerant in the system, there can be an additional 1˚ - 1.5˚ of “drift” down in temperatureafter the compressor shuts off. The temperature may momentarily display as low as 32˚F (32.9˚F and belowrounds down to 32˚F) before beginning to rise again.

1. Press SET. SP1 will display (Fig. 4.1).

2. Press SET. Current set point will display (Fig. 4.2).

3. Press up or down on ADJUST to change the set point todesired temperature (Fig. 4.3).

4. Press SET (Fig. 4.4). The characters on the display willdisappear for a moment (Fig. 4.5) and then display the currenttemperature (Fig. 4.6). The new set point is now accepted.

Note: See Fig. 5 for examples of temperature ranges by set point.

Fig. 5 – Examples of temperature ranges by set point

Set point Cut-in Cut-out Normal temperature display range

38˚ 38˚ 34˚ 32˚ - 38˚39˚ 39˚ 35˚ 33˚ - 39˚40˚ 40˚ 36˚ 34˚ - 40˚41˚ 41˚ 37˚ 35˚ - 41˚42˚ 42˚ 38˚ 36˚ - 42˚43˚ 43˚ 39˚ 37˚ - 43˚44˚ 44˚ 40˚ 38˚ - 44˚45˚ 45˚ 41˚ 39˚ - 45˚46˚ 46˚ 42˚ 40˚ - 46˚

Fig. 4

Changing the temperature set point

Follett sets the temperature controller to a 38˚F set point. This set point may not deliver the temperature rangedesired for your specific application. For example, some medicine manufacturers suggest a storage temperaturerange of 36˚ to 46˚F. Therefore, we have provided you with the ability to easily change the set point to meet yourspecific needs. The changes can be made on the temperature controller located on the bottom left corner of theunit front.

6

7

Operation

How the refrigerator worksThe temperature control board and probe indicate when the refrigeration system is required to turn on and off. Theprobe signals the controller to turn the refrigeration system on when the interior cabinet temperature rises to thecontroller set point. The normally open contacts of the controller close, energizing the coil of the control relay.Then the normally open contacts of the relay close, energizing the evaporator and condenser fan motors and thecompressor. The compressor uses a current-style starting relay and a starting capacitor to start the compressormotor. The refrigeration system then removes heat from the cabinet interior and rejects it to the surrounding roomair. When the cabinet interior temperature falls by 3°F (controller will indicate 4°F), see explanation at the bottomof page 6, the probe signals the controller to turn the refrigeration system off. The controller contacts reopen, de-energizing the control relay coil. The relay contacts reopen, which de-energizes the evaporator and condenser fanmotors, and the compressor. Any accumulated frost on the evaporator coils melts during the off cycle. Thecondensate drains to the plastic drain pan mounted above the condensing unit where it is evaporated by the heatfrom the condensing unit.

Temperature controlThe temperature control system is preset by the factory to maintain a cabinet temperature of 35°F - 38°F. Ifdesired the cut in temperature of the controller can be raised to as high as 50°F by following the instructions onpage 6 for changing the temperature set point. The 3°F cut out differential will be maintained regardless of thecontroller set point.

DefrostingREF Series undercounter refrigerators do not require manual defrosting. The unit cooler defrosts automaticallywhen the condensing unit is in the OFF cycle.

Cleaning

Interior – Using a sponge or soft cloth, clean unit with a non-abrasive, non-chlorinated, all-purpose detergent.

Exterior – Wipe exterior with a soft cloth in the direction of grain as needed. Stainless steel polish may be used toenhance the finish of the unit.

Annual cleaningRemoval of dust and other particulates from air intake areas and the condenser is important for proper operation.Some environments with large amounts of dust may requiremore frequent cleaning.

1. Disconnect power to unit by turning switch on the lowerfront panel to the OFF position, switching circuit breaker toOFF position, and removing power cord from receptacle.

2. Remove lower front and rear panels (Fig. 6.1).Note: Front louvered panel may be removed for morefrequent cleaning of the condenser as needed

3. Remove drain pan (Fig. 6.2).4. Clean drain pan with a non-abrasive, non-chlorinated all-

purpose detergent.5. Reinstall drain pan.6. Use a vacuum cleaner with brush attachment to clean

condenser through lower front panel and compressor motor and related parts through lower rear panel.

7. Reinstall lower rear and lower front panels. 1

2

Fig. 6

Use only non-chlorine-based cleaners. Cleaners containing chlorine can cause staining and pitting of thestainless steel.!

Service

Latch adjustmentTo adjust for proper latch engagement1. Loosen striker plate mounting screws (Fig. 7.1).2. Move striker plate up or down as required and tighten screws.3. Test operation of latch.

To adjust for proper gasket seal1. Loosen striker depth adjustment screw (Fig. 7.2).2. Adjust stop in or out and tighten screws.3. Test operation of latch.

Door gasket replacement1. Remove existing gasket from mounting track. Verify mounting

track is free of any remaining gasket material.2. Align new gasket with mounting track and press firmly in place.3. Open and close door, checking for proper gasket seal without

pinching against refrigerator. Adjust latch and or striker asnecessary for proper door closure.

Slide-out compressor trayFollett's slide-out compressor tray allows technicians to partially slidethe condensing unit from the refrigerator back without cuttingrefrigerant lines.

1. Remove the rear panel (Fig. 8.1)2. Remove the two screws and spacers securing the condensate

pan, and set the pan aside (Fig. 8.2).3. Remove the two bolts securing the condensing unit to the

refrigerator base (Fig 8.3).4. Gently slide the condensing unit out (Fig 8.4).

Note: Do not put undue strain on the refrigerant lines

Wiring diagram

Note 1: Highlighted area on wiring diagramindicates jumper included on refrigeratorswith service numbers:

Service numbers B50486 to B57373 formodel REF5 Service numbers B50479 to B57369 formodel REF4-ADA

8

1

2

Fig. 7

208264

ProductModule No.

Service No.

Easton Pennsylvania

MOTOR COMPRESSOR THERMALLY PROTECTED

DESIGN PRESSURE HIGH SIDE

MIN. BRANCH CIRCUIT AMPACITY

MAX. BRANCH CIRCUIT FUSE SIZE

SINGLE

PHASE

LOW SIDE

L

THE USAMADE IN

OZ

PSIG

R

C

NSFUL

PART NO

HZ

CHARGE

AMPS R

AMPS

U

VOLTSCORPORATION

SERIAL NO

MODEL

FULL LOAD AMPS

REFRIGERANT

1

2

3

4

Fig. 8

NEUTRAL

HOT

120 VAC

L1

L2

CONDENSING UNIT

BLACK

BLACK

BLUE

BLACK

BLACK

RELAYR1

BLACK

R1RELAY

NND.

BLACK

LOADOVER

COMPC

ON/OFFSWITCH

CONTROLLER

BLUE

WHITE

EVAP.FAN

WHITERELAYR1

WHITE

RELAY

CAP.START

WHITE

CK

Note 1

Refrigeration systemThe REF Series refrigeration system is designed to give many years of trouble-free service. Except for routinecleaning of the air-cooled condenser and related parts, the refrigeration system requires no service ormaintenance. The system uses a capillary tube and is critically charged. Access fittings are provided for ease ofservice. However, the connection of refrigeration service hoses to the fittings will almost invariably result in asignificant change in the system charge. This change can adversely affect the performance of your refrigerator.Therefore, Follett recommends that if hoses are ever connected to the refrigeration system for service, therefrigerant should be recovered, the system evacuated, and recharged by weighing in the correct refrigerantcharge.

Note: Do not charge the system by pressures.

Checking refrigeration system pressures1. Remove the rear access panel (Fig. 8). 2. Turn the power switch to the on position. 3. Following the instructions on page 6 verify that the temperature controller is set to the original factory cut-in

setting of 38˚F. 4 Allow the refrigerator to operate and stabilize at least 30 minutes, verifying the cut-out temperature is being

reached. 5. Connect refrigerant hoses to access fittings and measure air temperature at condensor intake grille. 6. Verify correct pressures with the temperature chart below.

Troubleshoot refrigeration system as needed.

Note: Do not attempt to obtain correct refrigeration pressures by adjusting the system charge.

HIGH PRESSURE VAPOR

HIGH PRESSURE LIQUID

LOW PRESSURE LIQUID

LOW PRESSURE VAPORHIGH SIDESERVICE PORT

LOW SIDESERVICE PORT

FILTER-DRIER

COMPRESSOR

EVAPORATOR

CAPILLARY TUBE

CONDENSER

9

Refrigeration system diagram

Condensor inlet air temperature 70 80 90 100Discharge pressure 198 230 270 311Suction pressure 25 31 38 46

Possible cause

1. Power switch faulty or in OFFposition; loose connection.

2. Refrigerator not plugged in.3. No power to cord.4. Temp controller not energizing

control relay.5. Defective control relay.6. Probe not sensing cut in

temperature.1. Condensing unit power cord not

plugged in to socket.2. Control relay contacts not closing.1. Thermal overload open or

defective.2. Capacitor and/or relay defective.3. Compressor defective.1. Evaporator power cord not

plugged in to socket.2. Control relay contacts not closing.3. Defective fan motor.1. Controller not sensing cut off

temperature.2. Controller keeping control relay

energized.3. Control relay stuck closed.1. Condenser or evaporator coil

needs cleaning.2. Faulty door gasket.3. Excessively high ambient.

4. Refrigerant leak.5. Incorrect refrigerant charge.

6. Plugged capillary tube.7. Inefficient compressor.

Solution

1. Turn power switch to ON position;check switch and connections.

2. Connect plug.3. Restore power.4. Check controller contact terminals for

power. Replace controller if needed.5. Replace relay.6. Replace controller and/or probe.

1. Reconnect power cord.

2. Replace relay.1. Allow to cool or replace.

2. Replace as required.3. Replace compressor.1. Reconnect power cord.

2. Replace relay.3. Replace fan motor.1. Replace controller and/or probe.

2. Replace controller.

3. Replace control relay.1. Clean coils as needed.

2. Replace door gasket.3. Maximum recommended ambient is

100 degrees F.4. Locate and repair leak.5. Recover, evacuate and weigh in

correct charge.6. Replace capillary tube.7. Consult technical service.

Symptom

Refrigerator does not operate (no components run)

Compressor and condenser fan do not run.

Compressor does not run.

Evaporator fan motor does not run.

Refrigerator does not shut off.

Refrigerator does not maintaintemperature (all components run).

10

If problems persist after following this basic troubleshooting guide, call Follett’stechnical service group at (800) 523-9361, (888) 2-FOLLETT or (610) 252-7301.

Refrigerator troubleshooting guide

Before calling for service1. Check that unit is plugged in.2. Test outlet with another appliance to verify power.

AccessoriesTemperature alarmBefore installing alarm

1. Remove supplied 9-volt back-up battery from packing box.

2. Remove 2 screws from module face and remove faceplate.

3. Install back-up battery on battery connector.4. Locate DIP switches on the back of the

faceplate (Fig. 9).5. Review the factory DIP switch settings

(Fig. 10) and make any changes required to meet the needs of your specific application.

6. Reinstall faceplate.

Dip Switch OFF (factory default setting) ON1 No alarm delay 45 minute alarm delay2 Auto reset (alarm stops automatically as Manual reset of alarm (user must press soon as temperature returns to set range) RESET button to stop audible alarm even if temperature has returned to set range)3 & 4 Audible alarm on No audible alarm 3 Enables 5 min alarm “snooze” Enables 45 min alarm “snooze” when reset button is pressed (with 4 on) when reset button is pressed (with 4 off)

Fig. 10

Fig. 11Installing alarm

1. Mount alarm in desired location with screws (supplied by others) through back of housing. Do not place undue strain on probe cable.

Note: Do not modify length of probe wire. Probe will notmeasure temperature correctly if wire length is changed.

2. Plug power cord into 110 outlet.

3. Push center tab of short bottle bracket into top of rear leftpilaster (Fig. 11).

Note: Use longer bottle bracket for REF5 refrigeratorsusing cut-out upper shelf accessory.

4. Fill bottle with glycerin or other liquid to increase accuracyof readings by simulating the internal temperature ofmedications.

5. Insert bottle into bottle bracket.

11

Fig. 9

12

Setting alarm temperatures

1. After the installation is complete, allow 30 minutesfor the system to stabilize to ambient temperature.

2. Calibrate temperature alarm to refrigerator displaya. Press SET until “CAL” is displayed (Fig. 13.1). b. Press SET again to display “CAL” value (Fig. 13.1).c. Press top or bottom of ADJUST arrow to show

same temperature as displayed by refrigerator (Fig. 13.2).

3. Set high alarm limita. Press SET until “HSP” is displayed (Fig. 13.1). b. Press SET again to display HSP value (Fig. 13.1).c. Press top or bottom of ADJUST arrow until desired

HSP value is displayed (Fig. 13.2).

4. Set low alarm limita. Press SET until “LSP” is displayed (Fig. 13.1).b. Press SET again to display LSP value (Fig. 13.1).c. Press top or bottom of ADJUST arrow until desired

LSP value is displayed (Fig 13.2).

Alarm operation facts

The back-up battery will continue to provide alarm protectionduring power failure but will alarm ONLY if temperatures go out ofthe selected range. During power failure the alarm face will bedark but temperatures can be read by pressing the RESETbutton.

To see the highest or lowest temperature since last reset, press the button until “HI” or “LOW” appears. To clear log value, press RESET.

Because the temperature alarm display simulates the truetemperature of stored medications rather than the air temperatureinside the refrigerator, we suggest thatstaff refer to the alarm display to log temperatures for JCAHOcompliance.

Pyxis® system interfaceThe Pyxis-compatible door bracket interfaces with Pyxis’ standard lock box. The bracket must be installed byPyxis authorized installing technicians. Contact Pyxis directly at 800-367-9947 for questions relating to Pyxissystem operation.

2

1

Fig. 13

AC

AC

Black

White

Red

NC

NO

Com

Output

Sensor

Power

in

Fig. 126. Route probe through hole in refrigerator back and pushprobe down through gasketed bottle top.

Note: Alarm probe must be placed in bottle forproper system operation. Refer to Fig. 12 if attachingalarm to central monitoring or central alarm system. ASPDT 1 amp 24V AC resistive relay is provided for thisconnection.

13

Reference # Description Part #1 Fan motor, evaporator 001049192 Bracket, fan motor 001049273 Fan blade 001049354 Fan guard 001049435 Evaporator (includes parts above) 001048856 Filter drier & capillary tube 001032677 Compressor 001049508 Starting capacitor 00104968Not shown Starting relay 00104976Not shown Overload protector 001049849 Condenser fan motor 0010499210 Condenser fan blade 0010500711 Condensing unit 0010510612 Wiring strain relief 0010557713 Condenser 00105619Not shown Cap, starting capacitor 0010562714 Drain tube, evaporator (includes clamp) 00121681

Replacement parts

Refrigeration

Evaporator - Reference #5 Condensing unit - Reference #11

2

13

4

6

7

9

10

8

12

13

14

18 Finishing plug 00105536Not shown Leveling leg 0010343219 Strain relief, power cord 0010540320 Temperature controller 0010335821 Control relay retrofit kit (from clear plastic relay) 0013326421 Control relay (retrofitted refrigerators) 0013327222 Power cord 0010390323 Socket (each – 2 required) 0010388724 Power switch, flush mount (before svc# B28296) 502209

Power switch, recessed mount (after svc# B28296) 00114371Not shown Strain relief, wiring, front panel 00105577

14

Reference # Description Part #1 Door, REF5 (includes gasket) 00105015Not shown Door, REF4-ADA (includes gasket) 001139102 Latch & striker (includes screws) 001050233 Latch screws (each – 3 per latch) 001035074 Striker screws (each – 2 per striker) 5022875 Hinge (each – 2 required, includes screws) 001050316 Hinge screws (each – 6 per hinge) 001050807 Strip sealer (set of 4) 001050498 Gasket, REF5 (21 5/8" x 21 5/8" door) 00103291Not shown Gasket, REF4-ADA (18 5/8" x 21 5/8" door) 001080929 Shelves (each) 0010328310 Pilaster (each) 00105346Not shown Thumb screws (set of 8) 0010535311 Shelf support (snap-in, each) 0010536112 Lower front panel (includes 00114371 and screws) 0010505613 Front panel screws (each – 6 per panel) 0010537914 Rear panel (includes screws) 0010506415 Rear panel screws (each – 6 per panel) 0010538716 Condensate tray (includes screws & spacers) 00103275Not shown Key 0010507217 Spacer, condensate pan 00105098Not shown Seal, bushing, rear panel 00114512

Electrical components

3

1

4

5

6

9

10

11

12

13

7

rear cutaway

8

16

14 15

223

21

22

19

20 24

18

17

Hardware

15

Temperature alarm accessory

Reference # Description Part #Not shown Bottle kit (includes bottle, bracket and gasket) 00113779Not shown Controller kit (includes battery, probe and power supply) 00108175Not shown Gasket, bottle 00112029Not shown Bracket, bottle 00112011Not shown Bottle 00112037Not shown Battery 00112177Not shown Screws, (includes two for securing cover) 00115063Not shown Label, controller cover 00115071Not shown Temperature probe 00115097

Pyxis accessory

Not shown Pyxis door bracket 00114702

Cool Ideas For Ice Management00104109R09

02/05

801 Church Lane • PO Box D, Easton, PA 18044, USAToll free (800) 523-9361 • (888) 2-FOLLETT(610) 252-7301 • Fax (610) 250-0696 • www.follettice.com

UL®UL®C